[snmp] wanted Information regarding the PORT from which InformResponseis sendout

[Birgit Arkesteijn]

Hi Gejo,

I'm not sure I follow what you try to do.
The stack gives you no control over the source transport address.
Also, I feel you're trying to solve it at a low level.

However, if you get it work, good for you!
All the best.

Cheers, Birgit


On Wed, Nov 15, 2006 at 07:34:25PM +0530, Gejo.Thayil at aricent.com wrote:
> Hi Birjit,
> 
>     Thanks for your Immediate Response to my mail, I was thinking of a 
> simple workaround to this problem 
> and is still trying on it
> 
> - what I was trying is that to close the socket once we receive an INFORM, 
> then create it to send the RESPONSE
>   so that IPSec now sees the packet coming from the same port (SNMP TRAP 
> Port). 
> - Again close the socket after sending RESPONSE, 
> - DefaultInformContext(DefaultTrapContext) comes to know when socket is 
> closed 
>   Now try to create the Socket after a delay. Thread.sleep(An optimum 
> time); 
>   (This will takecare of the timegap between receiving and sending packet 
> )
> 
> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>  with this i could send out a RESPONSE to INFORM (for the first time from 
> Received Port(162)),
> it again started listening on the same PORT(162) after sleeping for an 
> optimum time
> received a 2nd INFORM but some socket creation error came before sending 
> RESPONSE (I'm working on this)
> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> 
> I think if we try this way, the only drawback is it will drop any packet 
> that comes while the stack is processing a RESPONSE to a received INFORM.
> Now that stack takes a processing time < 300mS (calculated by capturing 
> INFORM and RESPONSE on ethereal) this is not a drawback at all
> 
> 
> Sadly I'm not an expert on Sockets, so its taking some time for me, will 
> let you know if i can make this work
> 
> 
> 
> Regards
> 
> Gejo Joseph
> Flextronics Software Systems
> 18/1, Outer Ring Road
> Panathur Post, Bangalore
> 
> "I would love to change the world, but no one would give me the source 
> code"


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